Question about Steffen Time switch

Depends on how X is defined.

1. if X is the same for all days, then only one programme slot is required
Example X = 3 hours
Mon-Sun 17:00 ON
Mon-Sun 20:00 OFF

2. if X is different for each day, but always the same on the same day of the week, then 7 programme positions are required (one programme position for each day of the week)

3. if X should not always be the same on the same day of the week, then this is not possible

Notes:
The SET button selects the next programme position (20 x 2)
Prg 1 ON
Prg 1 OFF
Prg 2 ON
...
Prg 20 ON
Prg 20 OFF
Press the CLOCK button to exit programming

To programme example 1, only the HOUR button is required in addition to SET, because every day of the week is programmed by default (Mon-Sun)
- SET
- 17 x HOUR
- SET
- 20 x HOUR
- CLOCK

For example 2, the DAY button is also required to programme the day of the week
- SET
- 1 x DAY (Mon)
- 17 x HOUR
- SET
- 1 x DAY (Mon)
- (17 + X) x HOUR
- SET
- 2 x DAY (Tue)
- 17 x HOUR
- SET
- 2 x DAY (Tue)
- (17 + X) x HOUR
etc.
- CLOCK