Cryptic crossword No 564

Across

1. Calendar with date and time of depression (7)
2. Couple acquiring ring, that is plain (7)
3. Listed in advanced broadcast (5)
4. Returned cigarette stub with faltering heart, left listless (9)
5. The anxious suffering fatigue (10)
6. English say program writer is closing passage (4)
7. Bury heartless old character before bash?! (11)
8. Estate, scraping last of litter away, improving outdoor environment (11)
9. Small nose active (4)
10. From the first day, language of empire returns after fool starts to get emotional (10)
11. Declaration in German, if Estonia content (9)
12. 100020001, short pause (5)
13. Bold start concerning heavy weights found in St Malo (7)
14. Dubious commercial advantage held by group (7)

Down

1. Dance director is someone who phones it in (6)
2. Dislike re-organising a hotel (6)
3. Perversely, I shun mate's eagerness (10)
4. Allocate whole book (5)
5. Fragrant mix of cannabis, gazunder, unlimited curry and iodine (3-6)
6. First route in opposite direction (4)
7. Rant occasionally, with goalie fumbling in the area (8)
8. Swap old sixpences and thruppenny bits? (8)
9. Hoods with itchy collars (10)
10. Forty-five minutes in mock South Eastern drinking establishments (9)
11. Vulgar rabble at staged event (5,3)
12. See 23
13. Frustrate youth leader in unsettled times (6)
14. Flexible unit in factory (6)
15. Products bewitch at point of delivery (5,8)
16. In that case, individual financial speculators own startups (2,2)