Import Excel timelines with periods and BCE dates

AtlasTrack can now read compatible Excel timeline workbooks with Events and Periods sheets.

• Open or drop a workbook: use Import from Local Drive, or drag a supported file onto the page. If no project is open, AtlasTrack guides you through creating one before the import continues.
• Keep dates and durations: point events remain points; rows with an end date or end position become periods on the timeline.
• Use BCE dates: the date format accepts a negative year for BCE, with optional month and day.
• Read crowded periods more easily: overlapping periods use ribbons and visible overflow groups instead of covering one another. Event clearance in Settings lets you adjust the space around expanded event cards.