diff --git a/src/View/BoundaryCondition/Edit/Table.py b/src/View/BoundaryCondition/Edit/Table.py
index 363aa19f..d4e981df 100644
--- a/src/View/BoundaryCondition/Edit/Table.py
+++ b/src/View/BoundaryCondition/Edit/Table.py
@@ -24,7 +24,7 @@ from datetime import date, time, datetime, timedelta
 from tools import (
     trace, timer,
     timestamp_to_old_pamhyr_date,
-    old_pamhyr_date_to_timestamp
+    old_pamhyr_date_to_timestamp, format_datetime
 )
 
 from View.Tools.PamhyrTable import PamhyrTableModel
@@ -97,7 +97,9 @@ class TableModel(PamhyrTableModel):
                 if self._opt_data == "time":
                     value = timestamp_to_old_pamhyr_date(int(v))
                 else:
-                    value = str(datetime.fromtimestamp(v))
+                    value = format_datetime(
+                        self._start_date + timedelta(seconds=float(v))
+                    )
             else:
                 value = f"{v}"
 
@@ -114,6 +116,10 @@ class TableModel(PamhyrTableModel):
         column = index.column()
 
         try:
+            if (self._data.header[column] == "time"
+                    and self._opt_data == "date"):
+                value = self.date_to_elapsed_seconds(value)
+
             row = self.get_true_data_row(row)
 
             self._undo.push(
diff --git a/src/View/BoundaryCondition/Edit/Window.py b/src/View/BoundaryCondition/Edit/Window.py
index 29281d6f..788b1203 100644
--- a/src/View/BoundaryCondition/Edit/Window.py
+++ b/src/View/BoundaryCondition/Edit/Window.py
@@ -173,7 +173,8 @@ class EditBoundaryConditionWindow(PamhyrWindow):
             },
             data=self._data,
             undo=self._undo_stack,
-            opt_data=self._study.time_system
+            opt_data=self._study.time_system,
+            start_date=self._study.date
         )
 
         table.setModel(self._table)
diff --git a/src/View/BoundaryConditionsAdisTS/Edit/Table.py b/src/View/BoundaryConditionsAdisTS/Edit/Table.py
index eeba2689..e6c714d8 100644
--- a/src/View/BoundaryConditionsAdisTS/Edit/Table.py
+++ b/src/View/BoundaryConditionsAdisTS/Edit/Table.py
@@ -24,7 +24,7 @@ from datetime import date, time, datetime, timedelta
 from tools import (
     trace, timer,
     timestamp_to_old_pamhyr_date,
-    old_pamhyr_date_to_timestamp
+    old_pamhyr_date_to_timestamp, format_datetime
 )
 
 from View.Tools.PamhyrTable import PamhyrTableModel
@@ -87,7 +87,9 @@ class TableModel(PamhyrTableModel):
                 if self._opt_data == "time":
                     value = timestamp_to_old_pamhyr_date(int(v))
                 else:
-                    value = str(datetime.fromtimestamp(v))
+                    value = format_datetime(
+                        self._start_date + timedelta(seconds=float(v))
+                    )
             else:
                 value = f"{v}"
 
@@ -104,6 +106,10 @@ class TableModel(PamhyrTableModel):
         column = index.column()
 
         try:
+            if (self._data.header[column] == "time"
+                    and self._opt_data == "date"):
+                value = self.date_to_elapsed_seconds(value)
+
             row = self.get_true_data_row(row)
 
             self._undo.push(
diff --git a/src/View/BoundaryConditionsAdisTS/Edit/Window.py b/src/View/BoundaryConditionsAdisTS/Edit/Window.py
index 9ae31212..09670489 100644
--- a/src/View/BoundaryConditionsAdisTS/Edit/Window.py
+++ b/src/View/BoundaryConditionsAdisTS/Edit/Window.py
@@ -120,7 +120,8 @@ class EditBoundaryConditionWindow(PamhyrWindow):
             },
             data=self._data,
             undo=self._undo_stack,
-            opt_data=self._study.time_system
+            opt_data=self._study.time_system,
+            start_date=self._study.date
         )
 
         table.setModel(self._table)
diff --git a/src/View/BoundaryConditionsTemperature/Edit/Table.py b/src/View/BoundaryConditionsTemperature/Edit/Table.py
index 812cc5ec..196d68d7 100644
--- a/src/View/BoundaryConditionsTemperature/Edit/Table.py
+++ b/src/View/BoundaryConditionsTemperature/Edit/Table.py
@@ -24,7 +24,7 @@ from datetime import date, time, datetime, timedelta
 from tools import (
     trace, timer,
     timestamp_to_old_pamhyr_date,
-    old_pamhyr_date_to_timestamp
+    old_pamhyr_date_to_timestamp, format_datetime
 )
 
 from View.Tools.PamhyrTable import PamhyrTableModel
@@ -87,7 +87,9 @@ class TableModel(PamhyrTableModel):
                 if self._opt_data == "time":
                     value = timestamp_to_old_pamhyr_date(int(v))
                 else:
-                    value = str(datetime.fromtimestamp(v))
+                    value = format_datetime(
+                        self._start_date + timedelta(seconds=float(v))
+                    )
             else:
                 value = f"{v}"
 
@@ -104,6 +106,10 @@ class TableModel(PamhyrTableModel):
         column = index.column()
 
         try:
+            if (self._data.header[column] == "time"
+                    and self._opt_data == "date"):
+                value = self.date_to_elapsed_seconds(value)
+
             row = self.get_true_data_row(row)
 
             self._undo.push(
diff --git a/src/View/BoundaryConditionsTemperature/Edit/Window.py b/src/View/BoundaryConditionsTemperature/Edit/Window.py
index 5d875d3e..0c7306a4 100644
--- a/src/View/BoundaryConditionsTemperature/Edit/Window.py
+++ b/src/View/BoundaryConditionsTemperature/Edit/Window.py
@@ -117,7 +117,8 @@ class EditBoundaryConditionWindow(PamhyrWindow):
             },
             data=self._data,
             undo=self._undo_stack,
-            opt_data=self._study.time_system
+            opt_data=self._study.time_system,
+            start_date=self._study.date
         )
 
         table.setModel(self._table)
diff --git a/src/View/Geometry/Profile/Window.py b/src/View/Geometry/Profile/Window.py
index 4ada0795..41f20bbe 100644
--- a/src/View/Geometry/Profile/Window.py
+++ b/src/View/Geometry/Profile/Window.py
@@ -171,7 +171,7 @@ class ProfileWindow(PamhyrWindow):
 
     def profiles(self):
         """Return profiles from the geometry model owning this profile."""
-        return self._profile.reach.reach.profiles
+        return self._profile.reach.profiles
 
     def navigate_profile(self, offset):
         profiles = self.profiles()
diff --git a/src/View/Geometry/Window.py b/src/View/Geometry/Window.py
index 19aa0ff4..5399243e 100644
--- a/src/View/Geometry/Window.py
+++ b/src/View/Geometry/Window.py
@@ -818,6 +818,10 @@ class GeometryWindow(PamhyrWindow):
         # self.update_plot_rkc()
 
     def export_to_file(self):
+        export_interpolated = self._ask_export_options()
+        if export_interpolated is None:
+            return
+
         settings = QSettings(
             QSettings.IniFormat,
             QSettings.UserScope, 'MyOrg'
@@ -847,11 +851,9 @@ class GeometryWindow(PamhyrWindow):
             suffix = Path(filename).suffix
             if suffix != "":
                 if suffix == ".st" or suffix == ".ST":
-                    export_interpolated = self._ask_export_options()
-                    if export_interpolated is not None:
-                        self._export_to_file_st(
-                            filename[:-3], export_interpolated
-                        )
+                    self._export_to_file_st(
+                        filename[:-3], export_interpolated
+                    )
                 else:
                     # Warning popup when the format is not exportable
                     win = QtWidgets.QMessageBox()
@@ -862,9 +864,7 @@ class GeometryWindow(PamhyrWindow):
 
                     pass
             else:
-                export_interpolated = self._ask_export_options()
-                if export_interpolated is not None:
-                    self._export_to_file_st(filename, export_interpolated)
+                self._export_to_file_st(filename, export_interpolated)
 
     def _ask_export_options(self):
         win = QtWidgets.QMessageBox(self)
@@ -901,8 +901,9 @@ class GeometryWindow(PamhyrWindow):
             if is_interpolated and not export_interpolated:
                 continue
 
-            self._export_to_file_st_profile(wfile, profile, pid)
-            pid += 1
+            if profile.enabled:
+                self._export_to_file_st_profile(wfile, profile, pid)
+                pid += 1
 
     def _export_to_file_st_profile(self, wfile, profile, pid):
         num = f"{pid:>6}"
diff --git a/src/View/LateralContribution/Edit/Table.py b/src/View/LateralContribution/Edit/Table.py
index 2c1e87ce..289b0265 100644
--- a/src/View/LateralContribution/Edit/Table.py
+++ b/src/View/LateralContribution/Edit/Table.py
@@ -23,7 +23,7 @@ from datetime import date, time, datetime, timedelta
 from tools import (
     trace, timer,
     timestamp_to_old_pamhyr_date,
-    old_pamhyr_date_to_timestamp
+    old_pamhyr_date_to_timestamp, format_datetime
 )
 
 from View.Tools.PamhyrTable import PamhyrTableModel
@@ -76,7 +76,9 @@ class TableModel(PamhyrTableModel):
                 if self._opt_data == "time":
                     value = timestamp_to_old_pamhyr_date(int(v))
                 else:
-                    value = str(datetime.fromtimestamp(v))
+                    value = format_datetime(
+                        self._start_date + timedelta(seconds=float(v))
+                    )
             else:
                 value = f"{v}"
 
@@ -93,6 +95,10 @@ class TableModel(PamhyrTableModel):
         column = index.column()
 
         try:
+            if (self._data.header[column] == "time"
+                    and self._opt_data == "date"):
+                value = self.date_to_elapsed_seconds(value)
+
             self._undo.push(
                 SetDataCommand(
                     self._data, row, column, value
diff --git a/src/View/LateralContribution/Edit/Window.py b/src/View/LateralContribution/Edit/Window.py
index 6b01d249..62329aef 100644
--- a/src/View/LateralContribution/Edit/Window.py
+++ b/src/View/LateralContribution/Edit/Window.py
@@ -109,7 +109,8 @@ class EditLateralContributionWindow(PamhyrWindow):
             data=self._data,
             undo=self._undo_stack,
             trad=self._trad,
-            opt_data=self._study.time_system
+            opt_data=self._study.time_system,
+            start_date=self._study.date
         )
 
         table.setModel(self._table)
diff --git a/src/View/LateralContributionsAdisTS/Edit/Table.py b/src/View/LateralContributionsAdisTS/Edit/Table.py
index 5975c875..eacd21b1 100644
--- a/src/View/LateralContributionsAdisTS/Edit/Table.py
+++ b/src/View/LateralContributionsAdisTS/Edit/Table.py
@@ -24,7 +24,7 @@ from tools import (
     trace, timer,
     timestamp_to_old_pamhyr_date,
     old_pamhyr_date_to_timestamp,
-    timestamp_to_old_pamhyr_date_adists
+    timestamp_to_old_pamhyr_date_adists, format_datetime
 )
 
 from View.Tools.PamhyrTable import PamhyrTableModel
@@ -90,7 +90,9 @@ class TableModel(PamhyrTableModel):
                 if self._opt_data == "time":
                     value = timestamp_to_old_pamhyr_date_adists(int(v))
                 else:
-                    value = str(datetime.fromtimestamp(v))
+                    value = format_datetime(
+                        self._start_date + timedelta(seconds=float(v))
+                    )
             else:
                 value = f"{v}"
 
@@ -107,6 +109,10 @@ class TableModel(PamhyrTableModel):
         column = index.column()
 
         try:
+            if (self._data.header[column] == "time"
+                    and self._opt_data == "date"):
+                value = self.date_to_elapsed_seconds(value)
+
             row = self.get_true_data_row(row)
 
             self._undo.push(
diff --git a/src/View/LateralContributionsAdisTS/Edit/Window.py b/src/View/LateralContributionsAdisTS/Edit/Window.py
index 174cc644..f828dc8c 100644
--- a/src/View/LateralContributionsAdisTS/Edit/Window.py
+++ b/src/View/LateralContributionsAdisTS/Edit/Window.py
@@ -124,7 +124,8 @@ class EditLateralContributionAdisTSWindow(PamhyrWindow):
             data=self._data,
             undo=self._undo_stack,
             trad=self._trad,
-            opt_data=self._study.time_system
+            opt_data=self._study.time_system,
+            start_date=self._study.date
         )
 
         table.setModel(self._table)
diff --git a/src/View/Tools/PamhyrTable.py b/src/View/Tools/PamhyrTable.py
index dc8920fb..a3196f97 100644
--- a/src/View/Tools/PamhyrTable.py
+++ b/src/View/Tools/PamhyrTable.py
@@ -19,7 +19,7 @@
 import logging
 import traceback
 
-from tools import trace, timer
+from tools import trace, timer, parse_datetime
 
 from Model.Except import NotImplementedMethodeError
 
@@ -34,8 +34,11 @@ from PyQt5.QtWidgets import (
     QFileDialog, QTableView, QAbstractItemView,
     QUndoStack, QShortcut, QAction, QItemDelegate,
     QComboBox, QStyledItemDelegate, QHeaderView,
+    QMessageBox,
 )
 
+_translate = QCoreApplication.translate
+
 logger = logging.getLogger()
 
 
@@ -59,6 +62,27 @@ class PamhyrTextDelegate(QStyledItemDelegate):
 
 
 class PamhyrTableModel(QAbstractTableModel):
+    def date_to_elapsed_seconds(self, value):
+        """Convert an entered date to seconds since the study start date."""
+        try:
+            entered_date = parse_datetime(value)
+        except ValueError as error:
+            QMessageBox.warning(
+                self._table_view,
+                _translate("PamhyrTableModel", "Invalid date/time"),
+                _translate(
+                    "PamhyrTableModel",
+                    "The entered date/time is invalid.\n"
+                    "Expected formats:\n"
+                    "YYYY-MM-DD [HH:MM[:SS]],\n"
+                    "DD-MM-YYYY [HH:MM[:SS]] or\n"
+                    "DD/MM/YYYY [HH:MM[:SS]]."
+                )
+            )
+            raise error
+
+        return (entered_date - self._start_date).total_seconds()
+
     def _setup_delegates(self):
         if self._table_view is None:
             return
@@ -85,7 +109,8 @@ class PamhyrTableModel(QAbstractTableModel):
                  undo=None,
                  opt_data=None,
                  options=["rows_selection"],
-                 parent=None):
+                 parent=None,
+                 start_date=None):
         super(PamhyrTableModel, self).__init__()
 
         self._table_view = table_view
@@ -102,6 +127,7 @@ class PamhyrTableModel(QAbstractTableModel):
         self._options = options
         self._undo = undo
         self._lst = []
+        self._start_date = start_date
 
         self._setup_delegates()
         self._setup_lst()
diff --git a/src/View/WeatherParameters/Edit/Table.py b/src/View/WeatherParameters/Edit/Table.py
index a77b0e2d..2a9c8754 100644
--- a/src/View/WeatherParameters/Edit/Table.py
+++ b/src/View/WeatherParameters/Edit/Table.py
@@ -23,7 +23,7 @@ from datetime import date, time, datetime, timedelta
 from tools import (
     trace, timer,
     timestamp_to_old_pamhyr_date,
-    old_pamhyr_date_to_timestamp
+    old_pamhyr_date_to_timestamp, format_datetime
 )
 
 from View.Tools.PamhyrTable import PamhyrTableModel
@@ -77,7 +77,9 @@ class TableModel(PamhyrTableModel):
                 if self._opt_data == "time":
                     value = timestamp_to_old_pamhyr_date(int(v))
                 else:
-                    value = str(datetime.fromtimestamp(v))
+                    value = format_datetime(
+                        self._start_date + timedelta(seconds=float(v))
+                    )
             else:
                 value = f"{v}"
 
@@ -94,6 +96,10 @@ class TableModel(PamhyrTableModel):
         column = index.column()
 
         try:
+            if (self._data.header[column] == "time"
+                    and self._opt_data == "date"):
+                value = self.date_to_elapsed_seconds(value)
+
             self._undo.push(
                 SetDataCommand(
                     self._data, row, column, value
diff --git a/src/View/WeatherParameters/Edit/Window.py b/src/View/WeatherParameters/Edit/Window.py
index 2e2bb878..d20beaab 100644
--- a/src/View/WeatherParameters/Edit/Window.py
+++ b/src/View/WeatherParameters/Edit/Window.py
@@ -121,7 +121,8 @@ class EditWeatherParametersWindow(PamhyrWindow):
             data=self._data,
             undo=self._undo_stack,
             trad=self._trad,
-            opt_data=self._study.time_system
+            opt_data=self._study.time_system,
+            start_date=self._study.date
         )
 
         table.setModel(self._table)
diff --git a/src/tools.py b/src/tools.py
index 35f806fd..6422f808 100644
--- a/src/tools.py
+++ b/src/tools.py
@@ -22,7 +22,7 @@ import logging
 import sqlite3
 import traceback
 
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 from pathlib import Path
 
 from colorama import Fore
@@ -239,6 +239,57 @@ def timestamp(dt: datetime):
     return dt.timestamp()
 
 
+SUPPORTED_DATETIME_FORMATS = (
+    "%d-%m-%Y %H:%M:%S.%f",
+    "%d-%m-%Y %H:%M:%S",
+    "%d-%m-%Y %H:%M",
+    "%d-%m-%Y",
+    "%d/%m/%Y %H:%M:%S.%f",
+    "%d/%m/%Y %H:%M:%S",
+    "%d/%m/%Y %H:%M",
+    "%d/%m/%Y",
+    "%d-%m-%y %H:%M:%S",
+    "%d/%m/%y %H:%M:%S",
+)
+
+
+def parse_datetime(value):
+    """Parse a supported date representation into a naive UTC datetime."""
+    if isinstance(value, datetime):
+        parsed = value
+    else:
+        text = str(value).strip()
+        if text.endswith(("Z", "z")):
+            text = text[:-1] + "+00:00"
+
+        try:
+            parsed = datetime.fromisoformat(text)
+        except ValueError as iso_error:
+            for date_format in SUPPORTED_DATETIME_FORMATS:
+                try:
+                    parsed = datetime.strptime(text, date_format)
+                    break
+                except ValueError:
+                    continue
+            else:
+                raise ValueError(
+                    f"Unsupported date format: {value!r}. Expected an ISO "
+                    "date/time or one of: "
+                    + ", ".join(SUPPORTED_DATETIME_FORMATS)
+                ) from iso_error
+
+    # If the parsed datetime has timezone information, convert it to UTC and remove the timezone info
+    if parsed.tzinfo is not None:
+        parsed = parsed.astimezone(timezone.utc).replace(tzinfo=None)
+
+    return parsed
+
+
+def format_datetime(value):
+    """Return a datetime using the canonical application format."""
+    return parse_datetime(value).strftime("%Y-%m-%d %H:%M:%S")
+
+
 def date_iso_to_timestamp(date: str):
     if type(date) is str:
         return timestamp(datetime.fromisoformat(date))