2022 Datum Change

[@joshuaconstable6323]

You are so amazing David!!!! I really appreciate you and hope you and your family are doing well. God bless

[@MrAdewale]

Good Day Sir, i really enjoyed your teachings datum Change, vertical Datum, Geodetic Surfaces and Datum. I will be glad to have more teachings on the followings: 1. Earth and it's Gravitational Field 2. Fundamentals of Gravity Field theory and Gravity Potentials 3. Laplace's and Geoid Undulation and Deflection of vertical

[@sofosterlg]

I have enjoyed your presentations immensely. As an original DMA member, geoceiver jock and Doppler surveyor I find your talks interesting and informative.

[@Nerd3927]

Many Many thanks for this excellent presentation!

[@daveross92983]

EXCELLENT PRESENTATION!

[@burny890]

Wow just noticed his Dead tie already a fan :)

[@daviddoyle8098]

Thanks Chris. 40+ concerts.

[@burny890]

@@daviddoyle8098 No problem and that's incredible keep on truckin! Have any specific ones that were your favorites? I'll try and give it a listen when I have some time

[@daviddoyle8098]

@@burny890-- My favorites depend on my mood - one day it's Franklin's Tower another it could be Brokedown Palace or Lazy River Road. I've collected 1400+ concerts with about 30000k songs. My wife doesn't quite understand how I can listen to 20 versions of Bertha or Dire Wolf. I have a standing offer to anyone who wants what I've collected to give me a 1TB external drive - I copy everything and send it back. It's all about sharing it forward as so many have shared with me.

[@burny890]

@@daviddoyle8098 Ah yes I love it! Lol I meant more of which concerts you had attended that really stood out. I've been through most of the 77-79 catalog of live shows and there are so many legendary sets. I hear that when I am feeling upbeat and high energy I'll get a little St. Stephen and Let it Grow going. Loser and Wharf Rat always gets me too when I'm feeling a little down trodden and Terrapin of course for all it's abstract wonder. I would love to mail you a Hard Drive for that collection. A show I personally have been obsessed with the past 2 years is from 9/2/79 St Augusta Civic Center just an absolute gem all around. Also if you are an android user there is an app called Deadhead Archives and it has live shows from every year of the band's existence including other newer jam bands check it out I'm sure you'll love it.

[@daviddoyle8098]

@@burny890 - Best concerts - that's a really hard one, maybe Watkins Glen July '73 for a bunch of different reasons or March '93 at the Capital Center - first one where I took my oldest son. Just opened the Augusta concert - great set list. Send me a drive to 12503 Two Farm Dr., Silver Spring, MD 20904. Once I get it I should have back to you in just a few days. BTW I hope the presentation about the upcoming datum changes is helpful. The position and height changes will have a major impact on anyone dealing with high accuracy geospatial positioning.

[@alstewart9212]

Very good . Go red USA and save the republic.